Umuringa ufite imbaraga zo kurwanya ruswa ahantu humye, ariko bikunze gukora patina murwego rwo hejuru - ubushuhe cyangwa sulfuru - irimo ibidukikije bya gaze, bigatuma habaho kwiyongera kubarwanya guhura. Ubuso bwa aluminiyumu bukunze gukora firime yuzuye ya okiside, ishobora gukumira irindi ruswa. Nyamara, kurwanya firime ya okiside (hafi 10⁻⁶Ω · cm²) irarenze cyane iy'umuringa (10⁻⁶Ω · cm²), kandi igomba kunozwa hifashishijwe amabati, isahani ya nikel cyangwa kuvura okiside ya anodic.
Ku bijyanye n'ingaruka z'ubushyuhe ku mashanyarazi, coefficient de coiffure yo kurwanya umuringa (0.0043 / dogere) iri munsi ya aluminium (0.0041 / dogere), ariko coefficente yo kwagura ubushyuhe bwa aluminium (23,6 × 10⁻⁶ / dogere) ikubye inshuro 1.4 z'umuringa (16.5 × 10⁻⁶ / dogere). Mubihe bifite ihindagurika ryinshi ryubushyuhe, kwaguka kwubushyuhe no kugabanya utubari twa aluminiyumu biragaragara cyane, bishobora gutera kurekura aho bihurira. Ibi birashobora kugabanywa hifashishijwe igishushanyo mbonera (nko kubika icyuho cyagutse) cyangwa ukoresheje imiyoboro ihuza.